A schematic diagram (board LA-F322P, LA-F321P). Shared as “LA-F322P LA-F321P PDF (2).rar” — a .rar file, 4.79 MB.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @dtechbios. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)